Uranium in South Dakota well water
In South Dakota, 6% of 2,933 tested private well samples exceeded the EPA limit for uranium (30 ug/L).
Uranium in well water comes from granite bedrock. Its main health effect is chemical toxicity to the kidneys rather than radiation. It is common in the same areas where radon and arsenic occur.
Check your uranium number
Type the value from your lab report. It is compared to the EPA limit, the same way the full interpretation does it.
Test your South Dakota well for uranium
Certified lab analysis of your own tap water, bottles and prepaid return shipping included. The Essential well panel covers arsenic, uranium, nitrate, lead, copper, manganese, iron, sodium and bacteria; radon and PFAS are add-ons.
Order the Tap Score well water test kit, from $209Already tested? Upload the report
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Systems that remove uranium
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Some links below are affiliate links. If you buy through one, the merchant pays us a commission at no extra cost to you. It does not change which products we list or what the data says.
For uranium
Under-sink reverse osmosis system
under-sink or countertop, about $300
Look for NSF/ANSI 58 certification listing the contaminant you need removed.
For uranium
Whole-house arsenic and uranium filter
whole-house, at the point of entry, about $2,500
Adsorptive iron-based media; sized to your well yield.
Rather have it installed and sized for your well? Book a free in-home water test with a licensed local company.
Where to get a well tested for uranium in South Dakota: certified labs, state programs and prices.
By county, from individual samples
Public monitoring samples against the EPA limit (30 ug/L); counties with at least 30 samples.
| County | Above EPA limit | Samples | Detected | Median | Highest |
|---|---|---|---|---|---|
| Butte | 72 | 78% | 1.75 | 97 ug/L | |
| Brookings | 84 | 86% | 5.8 | 64 ug/L | |
| Codington | 71 | 82% | 5.3 | 69 ug/L | |
| Hamlin | 46 | 85% | 5.8 | 100 ug/L | |
| Pennington | 260 | 88% | 3.15 | 190 ug/L | |
| Oglala Lakota | 39 | 97% | 13 | 92 ug/L | |
| Meade | 255 | 93% | 5.5 | 71 ug/L | |
| Fall River | 226 | 83% | 3.7 | 115 ug/L | |
| Custer | 150 | 96% | 5.45 | 62 ug/L | |
| Union | 43 | 91% | 1.7 | 45 ug/L | |
| Harding | 303 | 77% | 0.5 | 183 ug/L | |
| Marshall | 91 | 74% | 0.6 | 78 ug/L | |
| Clark | 97 | 65% | 0.4 | 93 ug/L | |
| Day | 105 | 80% | 2.4 | 56 ug/L | |
| Roberts | 119 | 81% | 2.9 | 82 ug/L |
- Northeast Fall River UT, Fall River County18% of 76
- East Custer UT, Custer County14% of 77
- North Meade UT, Meade County13% of 76
- Central Pennington UT, Pennington County11% of 45
- South Harding UT, Harding County11% of 129
- Belle Fourche-Cheyenne Valleys UT, Meade County10% of 86
- West Butte UT, Butte County8% of 36
- Southwest Fall River UT, Fall River County8% of 102
- Southwest Meade UT, Meade County6% of 54
- West Custer UT, Custer County4% of 72
- North Harding UT, Harding County4% of 173
- North Lawrence UT, Lawrence County0% of 34
- Argentine township, Fall River County0% of 39
- South Perkins UT, Perkins County0% of 46
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. uranium counts and shares are listed on each county and town page with their sources.